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Radiation Protection Dosimetry Advance Access originally published online on February 3, 2007
Radiation Protection Dosimetry 2006 122(1-4):16-21; doi:10.1093/rpd/ncl494
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© The Author 2006. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

INVITED PAPER

Track structure: time evolution from physics to chemistry

M. Dingfelder*

Department of Physics, East Carolina University, Howell Science Complex, Greenville, NC 27858, USA

* Corresponding author: dingfelderm{at}ecu.edu


  Abstract

This review discusses interaction cross sections of charged particles (electrons, protons, light ions) with atoms and molecules. The focus is on biological relevant targets like liquid water which serves as a substitute of soft tissue in most Monte Carlo codes. The spatial distribution of energy deposition patterns by different radiation qualities and their importance to the time evolution from the physical to the chemical stage or radiation response is discussed. The determination of inelastic interaction cross sections for charged particles in condensed matter is discussed within the relativistic plane-wave Born approximation and semi-empirical models. The dielectric-response-function of liquid water is discussed.


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